IMHO.

Touhou Shinreibyou ~ Ten Desires. vs Touhou Seirensen ~ Undefined Fantastic Object.

Touhou Shinreibyou ~ Ten Desires. and Touhou Seirensen ~ Undefined Fantastic Object. both land in Action, Indie on Steam, which is why they keep getting compared. The comparison below is built from each game's Steam metadata — release year, genres, categories, Steam Deck status, price, and review score — refreshed daily by imho.run's scraper. Headline differences: Both share Action, Indie on Steam. Touhou Shinreibyou ~ Ten Desires. (2019) is 1 year older than Touhou Seirensen ~ Undefined Fantastic Object. (2020). Touhou Shinreibyou ~ Ten Desires. scores higher on Steam reviews (95.9% positive) than Touhou Seirensen ~ Undefined Fantastic Object. (94.4% positive). No login or purchase needed — scroll for the full table, the verdict FAQ, and links to ranked similar games for both titles.

Which should you pick?

Choose Touhou Shinreibyou ~ Ten Desires.

Choose Touhou Shinreibyou ~ Ten Desires. if it matches what drew you to this matchup. Touhou Shinreibyou ~ Ten Desires. launched in 2019.

Choose Touhou Seirensen ~ Undefined Fantastic Object.

Choose Touhou Seirensen ~ Undefined Fantastic Object. if it matches what drew you to this matchup. Touhou Seirensen ~ Undefined Fantastic Object. launched in 2020.

Both Touhou Shinreibyou ~ Ten Desires. and Touhou Seirensen ~ Undefined Fantastic Object. sit in Action and Indie on Steam, so either pick lands in the same broad neighborhood. Steam reviews are nearly tied (95.9% vs 94.4% positive), so genre fit is the cleanest tiebreaker — scroll the table for the feature-by-feature view.

Side-by-side comparison

Touhou Shinreibyou ~ Ten Desires. vs Touhou Seirensen ~ Undefined Fantastic Object. — Steam metadata comparison
Touhou Shinreibyou ~ Ten Desires. — Steam game coverTouhou Shinreibyou ~ Ten Desires.Touhou Seirensen ~ Undefined Fantastic Object. — Steam game coverTouhou Seirensen ~ Undefined Fantastic Object.
Released20192020
GenresAction, IndieAction, Indie
PlatformsWindowsWindows
Steam DeckDeck PlayableDeck Playable
Price14.99 USD14.99 USD
Steam reviews95.9% positive (169 reviews)94.4% positive (144 reviews)
MultiplayerSingle-player onlySingle-player only
Developers上海アリス幻樂団上海アリス幻樂団

Side by side

Touhou Shinreibyou ~ Ten Desires. vs Touhou Seirensen ~ Undefined Fantastic Object. — FAQ

Which is better, Touhou Shinreibyou ~ Ten Desires. or Touhou Seirensen ~ Undefined Fantastic Object.?
On Steam reviews the two are nearly tied: Touhou Shinreibyou ~ Ten Desires. sits at 95.9% positive (169 reviews), Touhou Seirensen ~ Undefined Fantastic Object. at 94.4% (144). The choice usually comes down to genre fit and the platform features each one supports — see the comparison table above.
Should I play Touhou Shinreibyou ~ Ten Desires. or Touhou Seirensen ~ Undefined Fantastic Object. first?
If you want chronology, Touhou Shinreibyou ~ Ten Desires. (2019) came out before Touhou Seirensen ~ Undefined Fantastic Object. (2020). If neither is a sequel to the other, order doesn't really matter — start with whichever fits your current mood, since both share enough on Steam to make either a reasonable opener.
Are Touhou Shinreibyou ~ Ten Desires. and Touhou Seirensen ~ Undefined Fantastic Object. similar?
They overlap on Action, Indie on Steam, so the catalogue groups them together — but "similar" depends on the specific mechanics. Use the genre + category rows above to decide whether the overlap matches what drew you to the one you've already played.
Touhou Shinreibyou ~ Ten Desires. vs Touhou Seirensen ~ Undefined Fantastic Object. · imho.run